Marion County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2018 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the citizen voting-age population for Marion County, IL was 29.10K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (27.18K) and constituted 93.39% of the total.

The Non-Hispanic Black or African American Alone ethnicity group had the second highest citizen voting-age population (1.06K) and constituted 3.63% of the total. The Hispanic or Latino of All Races ethnicity group had the third highest (340), constituting 1.17% of the total citizen voting-age population.

The charts and tables below shows the citizen voting-age population and percentages by race and ethnicity.

You can also see similar information for other Illinois counties, and for Illinois.

Data Source: US Census - ACS 5-Years (CVAP).

See this for other years:

Marion County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2018

Non-Hispanic White Alone

Non-Hispanic Black Alone

Hispanic or Latino of All Races

Non-Hispanic Two Or More Races

Non-Hispanic Asian Alone

Non-Hispanic American Indian & Alaska Native Alone

Marion County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2018

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	27175	93.39
Non-Hispanic Black or African American Alone	1055	3.63
Hispanic or Latino of All Races	340	1.17
Non-Hispanic Two Or More Races	240	0.83
Non-Hispanic Asian Alone	210	0.72
Non-Hispanic American Indian and Alaska Native Alone	80	0.28